Stove



J. G. TREADWELL.

Damper.

No. 24,832. Patented July 19, 1859. 4

UNITED STATES PATENT OFFICE.

JNO. G. TREADWELL, OF ALBANY, NEW YORK.

STOVE.

Specification of Letters Patent No. 24,832, dated July 19, 1859.

To all whom it may concern:

Be it known that I, JNo. G. TREADWELL, of Albany, in the State of New York, have invented certain new and useful Improvements in Ventilating-Stoves; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention consists in the arrangement of the several parts hereinafter described substantially as will be set forth.

Figure 1 represents a perspective View of the invention a portion of the pipe being cut away to show operation of the internal arrangement. Fig. 2 shows a vertical section taken longitudinally of the stove. Fig. 3 is a plan view.

In the drawings A, represents the top plate of the stove, to which the pipe B, is secured in the usual manner. Pipe B is provided with, a division C, by means of which two flues are formed in the said pipe. This division is so placed as to form a large flue, and a small one. cl represents the large flue and a damper D, is provided at the lower extremity of said flue for the purpose of opening and closing it at pleasure. This damper is made to fit the flue (Z, snugly in order to prevent the passage of air or gas up the flue when it is not desired. One side of the pipe B, is provided with an opening which leads into the flue (Z, from the external air. This opening is closed by means of a door E, which is hinged to the pipe above it. The damper D, and the door E, are connected together by means of a rod a, in such manner that when the damper is closed the door E, is pushed back and the opening unclosed and when the door is closed the flue (Z, is unclosed by the damper.

0, represents a'small flue, which is never closed.

When I wish the fire to burn rapidly I turn the damper so as to open the flue (Z. The door E, is then closed, so that the smoke and gas cannot pass into the room, but, when I wish the fire to burn slowly and at the same time to have the room properly ventilated I turn the damper so as to close, the flue and open the door. The products of combustion then pass up the small flue e, slowly, and the air from the room passes up the flue d, through the opening, and thus by a constant current of air passing up the flue the room is ventilated perfectly.

It is not necessary to have the division C, extend but a short distance up the pipe B, just far enough to conduct away the gases and to prevent them from passing into the room through the opening in the pipe.

By means of the flue e, the smoke and gas are carried away from the fire and a heat is kept up in the pipe which makes a draftand increases ventilation when the damper closes flue (Z.

(H) represent wings which are secured to the pipe B, on both sides of the door E, for the purpose of conducting the air into the opening in the pipe.

Ventilation is of vital importance to all those who are in the habit of using coal stoves, and a good apparatus of this kind is very necessary.

It is the case with ordinary coal stoves that when the damper is turned, ventilation ceases ;if the damper is not turned the room becomes too warm and fuel is wasted unnecessarily. In my stove when the draft is turned off ventilation is as great, or greater, than when the draft is turned on. I am enabled by my arrangement to regulate the temperature, carry off impure air from the room and to save fuel.

I am aware that ventilating stoves have been used before, but differently arranged.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is The combination of the division C, with the damper D, and door E, when the same are arranged substantially in the manner and for the purpose herein specified.

J NO. Gr. TREADVVELL.

Witnesses:

JAMES EASTERLY, S. F. SAVAGE. 

